(Knowing when it's safe to return after a local quake is something still needing research, Bernard says, but as a benchmark, in the 2004 event tsunami waves pummeled the Sumatran coast for 12 ...

In 2004, a 9.1 magnitude earthquake off the island of Sumatra in western Indonesia triggered a tsunami in the Indian Ocean that killed more than 220,000 people across 12 countries.